/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/ConvexHalfEdgeStructureData.h
Get a vertex in the specified Edge (NOTE: edge index, not half-edge index) EdgeIndex must be in range [0,NumEdges()) EdgeVertexIndex must be 0 or 1 return value is in range [0,NumVertices())
int32 GetEdgeVertex ( int32 EdgeIndex, int32 EdgeVertexIndex ) const